Table 2.

Temporal summation (TS) and conditioned pain modulation (CPM) effects

	Mean (SD)	Sig.
TS of mechanical pain (512mn) at the low back
1 Contact	32.6 (31.7)
10 Contacts	50.1 (33.7)	t = 10.54, p < .001
CPM at the low back
Baseline PPT	411.6 (213.2)
Conditioned PPT	430.6 (221.4)	t = 1.94, p = .054

Note: 1 Contact = pain intensity rating (0–100) in response to first contact with mechanical stimuli, 10 contact = pain intensity rating (0–100) in response to 10 contacts with mechanical stimuli; PPT pressure pain threshold measured in kilopascals (kPa)